B K/mueller Inds 521-973HN Black Hex Bushing 1.5x0.5in 5-pack

Product Description

The B K/Mueller Inds 521-973HN is a black hex bushing used to reduce a larger threaded pipe opening to a smaller one. This fitting transitions from a 1-1/2 inch female thread to a 1/2 inch male thread and is finished in black iron. It is a standard pipe fitting used in gas piping, water distribution, and mechanical systems. Plumbers and pipefitters install these bushings when adapting between different pipe diameters within a threaded pipe assembly. The hex design allows for a wrench to apply proper torque during installation. Each package contains 5 units, making it suitable for multi-connection jobs or service stock.

This hex bushing is used in residential and light commercial plumbing and gas piping applications. It fits into standard threaded pipe systems where a size reduction is needed without adding a nipple and coupling combination. Typical install scenarios include gas appliance rough-ins, water supply lines, and general mechanical piping where NPT threaded fittings are required. The black iron finish makes it well suited for gas service applications.

Key Features

• Reduces 1-1/2 inch female NPT to 1/2 inch male NPT in a single fitting
• Black iron finish suitable for gas piping service
• Hex body design allows wrench engagement for secure installation
• Sold in a package of 5 units for multi-connection jobs
• Standard threaded bushing for use in NPT pipe systems

Compatibility

Designed as an OEM-style replacement or standard-use fitting for any threaded NPT pipe system requiring a 1-1/2 inch to 1/2 inch bushing reduction.

Installation Notes

Installation is performed by licensed plumbers or pipefitters working on threaded pipe systems. Shut off gas or water supply to the line before beginning any fitting work. Apply appropriate thread sealant or pipe tape to all threaded connections before assembly. Follow applicable local codes, including IFGC and IPC requirements, for gas and water piping applications.